WO2016169069A1 - 偏光片、基于量子效应的显示面板及显示装置 - Google Patents

偏光片、基于量子效应的显示面板及显示装置 Download PDF

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WO2016169069A1
WO2016169069A1 PCT/CN2015/078417 CN2015078417W WO2016169069A1 WO 2016169069 A1 WO2016169069 A1 WO 2016169069A1 CN 2015078417 W CN2015078417 W CN 2015078417W WO 2016169069 A1 WO2016169069 A1 WO 2016169069A1
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polytriacetate
polarizer
adhesive layer
adhesive
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French (fr)
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徐向阳
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/768,286 priority Critical patent/US20170139092A1/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
    • G—PHYSICS
    • G02—OPTICS
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    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
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    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133635—Multifunctional compensators
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/36—Micro- or nanomaterials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S977/00—Nanotechnology
    • Y10S977/70—Nanostructure
    • Y10S977/773—Nanoparticle, i.e. structure having three dimensions of 100 nm or less
    • Y10S977/774—Exhibiting three-dimensional carrier confinement, e.g. quantum dots
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S977/00—Nanotechnology
    • Y10S977/902—Specified use of nanostructure
    • Y10S977/932—Specified use of nanostructure for electronic or optoelectronic application
    • Y10S977/952—Display

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a polarizer and a quantum effect based display panel and display device.
  • Quantum Dot is a quasi-zero-dimensional nanomaterial composed of a small number of atoms. The movement of its internal electrons in all directions is limited, so the quantum confinement effect is particularly obvious. Quantum dots are also known as "artificial atoms" because quantum confinement effects lead to discontinuous electron energy level structures like atoms.
  • Small quantum dots such as colloidal semiconductor nanocrystals, can be as small as 2 to 10 nanometers, which is equivalent to a diameter of 10 to 50 atoms. In a quantum dot, it can also be called nanocrystal, which is a type II- Nanoparticles composed of Group VI or Group III-V elements.
  • the quantum dot particle size is generally between 1 and 10 nm. Since the electrons and holes are quantum confined, the continuous band structure becomes a discrete energy level structure with molecular characteristics, and can be excited after being excited. Based on quantum effects, quantum dots have broad application prospects in the fields of solar cells, light-emitting devices, and optical biomarkers.
  • the quantum dot volume may contain from 100 to 100,000 such atoms.
  • QD TV is a film sheet that uses quantum technology on the current liquid crystal display (LCD) panel, or a TV made by applying the QD technology to the panel backlight module.
  • QD panel production costs 20% higher than LCD and light-emitting diode (LED) TVs, but brightness and color reproducibility can be greatly improved.
  • QD TV is also expected to be the next-generation TV to be seen before the mainstream of OLED TVs with better brightness and response speeds.
  • the present invention provides a polarizer that emits light closer to natural light, and a display panel and display device based on quantum effects.
  • a polarizer comprising an optical retardation sheet layer and a first adhesive layer, a polarizing layer, a third adhesive layer, and a quantum effect layer stacked on the optical retardation sheet layer in this order from bottom to top.
  • the first adhesive layer is a polyvinyl alcohol hydrosol material.
  • the optical retardation sheet layer is a quarter optical wave plate of PC or COP material.
  • the polarizer further comprises a second adhesive layer, and the second adhesive layer is disposed on a lower surface of the optical retarder layer.
  • the second adhesive layer is a pressure sensitive adhesive.
  • the pressure-sensitive adhesive is a composition including an acrylic polymer, an isocyanate crosslinking agent, and a silane coupling agent.
  • the polarizing layer comprises a first polytriacetate layer, a polyvinyl alcohol layer and a second polytriacetate layer, which are sequentially stacked from bottom to top, and the first polytriacetate layer is provided On the upper surface of the first adhesive layer, the second polytriacetate layer is provided on the lower surface of the third adhesive layer.
  • Another object of the present invention is to provide a display panel based on a quantum effect, comprising a lower polarizer, a glass substrate, a color filter substrate, and the above polarizer disposed in this order from bottom to top.
  • Still another object of the present invention is to provide a display device including a backlight unit and the above display panel, the display panel being disposed on an upper surface of the backlight unit.
  • the invention integrates the quantum effect layer into the polarizer, so that the polarizer has the function of the quantum effect layer, and the red, green and blue lines irradiated thereon are polarized and modulated into red, green and blue natural light with a narrow spectrum, thereby improving the color display of the display.
  • the color gamut at the same time, achieves a high color gamut of color display, low power consumption and green health display effect, and the thickness of the display panel and the display device is further reduced, which is advantageous for thinning of the display panel and the display device product.
  • FIG. 1 is a schematic structural view of a polarizer according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention.
  • the polarizer 100 of the present invention comprises an optical retardation sheet layer 2 and a first adhesive layer 3, a polarizing layer 10, a third adhesive layer 7, and a quantum effect layer 8 which are sequentially stacked on the optical retardation sheet layer 2 from bottom to top. .
  • the quantum effect layer 8 is mainly composed of red, green and blue excited quantum dot materials.
  • the red-green-blue quantum dot material obtains brighter and higher-purity natural light by exciting linearly polarized light that passes through the LCD, so the quantum dot display enables high color gamut, low power consumption, and green healthy display of color display.
  • the polarizer used in the embodiment of the present invention can make the three primary colors more uniform and closer to natural light.
  • the color reproduction rate of a typical white LED backlight module LCD display device is 73% based on NTSC (National Television Standards Committee) and 95% based on S-RGB, but after using a quantum effect layer, color
  • the recurrence rate can be increased to more than 100% or close to 100%.
  • the first adhesive layer 3 of the embodiment is selected from a polyvinyl alcohol hydrosol material
  • the optical retardation sheet layer 2 is a material of PC (polycarbonate) or COP (an optical material, generally a cyclic olefin copolymer). Quarter optical wave plate.
  • the polarizer further includes a second adhesive layer 1, and the second adhesive layer 1 is specifically disposed on the lower surface of the optical retardation sheet 2.
  • the second adhesive layer 1 is selected from a pressure sensitive adhesive
  • the third adhesive layer 7 and the second adhesive layer 1 may be the same material.
  • the pressure sensitive adhesive is selected from the group consisting of an acrylic polymer, an isocyanate crosslinking agent, and a silane coupling agent.
  • the polarizing layer 10 includes a first polytriacetate layer (TAC1) 4, a polyvinyl alcohol layer (PVA) 5, and a second polytriacetate layer 6 stacked in this order from the bottom to the top.
  • TAC1 first polytriacetate layer
  • PVA polyvinyl alcohol layer
  • the cellulose triacetate layer 4 is provided on the upper surface of the first adhesive layer 3
  • the second polytriacetate layer 6 is provided on the lower surface of the third adhesive layer 7.
  • the polarizer of the embodiment of the present invention is applied to the display device as an upper polarizer.
  • the display device includes a backlight unit 500 and a display panel (not shown).
  • the display panel is disposed on the backlight unit 500. surface.
  • the quantum effect based display panel includes lower polarized light arranged in order from bottom to top
  • the sheet 400, the glass substrate 200, the color filter substrate 300, and the polarizer 100, and the lower polarizer 400 are disposed opposite to the backlight unit 500.
  • the polarizer of the invention is applied to the upper polarizer, and the red, green and blue lines emitted by the lower polarizer, the liquid crystal layer, the color filter substrate and the upper polarizer are polarized by the quantum dot effect layer to form a red, green and blue natural light with a narrow spectrum. . Achieve brighter and higher color purity of natural light by exciting linearly polarized light passing through the LCD, enabling quantum dot display to achieve high color gamut, low power consumption, and green healthy display of color display; thickness of display panel and display device Further reduction is advantageous for thinning of display panels and display device products.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

一种偏光片（100）以及包括所述偏光片的显示面板和显示装置，所述偏光片（100）包括光学延迟片层（2）和从下至上依次堆叠于所述光学延迟片层（2）上的第一粘合剂层（3）、偏光层（10）、第三粘合剂层（7）及量子效应层（8）。将量子效应层（8）集成于偏光片（100）内，使偏光片（100）具有量子效应层（8）的功能，将照射到其上的红绿蓝线偏光调制成频谱更窄的红绿蓝自然光，提高了显示器的彩色显示色域，显示面板和显示装置的厚度进一步减小，有利于显示面板和显示装置产品的薄型化。

Description

偏光片、基于量子效应的显示面板及显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种偏光片及基于量子效应的显示面板及显示装置。
背景技术
量子点(Quantum Dot；QD)是准零维(quasi-zero-dimensional)的纳米材料，由少量的原子所构成。其内部电子在各方向的运动都受到局限，所以量子局限效应(quantum confinement effect)特别明显。由于量子局限效应会导致类似原子的不连续电子能阶结构，因此量子点又称为“人造原子”(artificial atom)。
小的量子点，例如胶体半导体纳米晶，可以小到只有2～10个纳米，相当于10～50个原子的直径尺寸，在一个量子点，又可称为纳米晶，是一种由II－VI族或III－V族元素组成的纳米颗粒。量子点的粒径一般介于1～10nm之间，由于电子和空穴被量子限域，连续的能带结构变成具有分子特性的分立能级结构，受激后可以发射荧光。基于量子效应，量子点在太阳能电池、发光器件、光学生物标记等领域具有广泛的应用前景。
现有技术中已有许多不同的方法来制造量子点，并已经开发出量子点显示产品。量子点体积中可以包含100～100,000个这样的原子。
QD电视是在目前的液晶显示器(LCD)面板上，黏贴上使用量子技术的薄膜片材；或是将QD技术应用于面板背光模块所制造的电视。QD面板生产成本比LCD、发光二极管(LED)电视高20％，但是亮度与色再现性可大幅提升。在明暗比与反应速度更卓越的OLED电视晋升主流之前，QD电视也可望成为受瞩目的下一代电视。
但是，目前的此种量子点膜片的应用主要是作为单独的一层设置在显示装置内，增加了显示装置的层级数，不利于显示装置的薄型化设计。
发明内容
鉴于现有技术存在的不足，本发明提供了一种发出的光更接近自然光的偏光片及基于量子效应的显示面板及显示装置。
为了实现上述的目的，本发明采用了如下的技术方案：
一种偏光片，包括光学延迟片层和从下至上依次堆叠于所述光学延迟片层上的第一粘合剂层、偏光层、第三粘合剂层及量子效应层。
其中，所述第一粘合剂层为聚乙烯醇水溶胶材料。
其中，所述光学延迟片层为PC或COP材料的四分之一光学波片。
其中，所述的偏光片还包括第二粘合剂层，所述第二粘合剂层设于所述光学延迟片层下表面。
其中，所述第二粘合剂层为压敏胶。
其中，所述压敏胶为包括丙烯酸系聚合物、异氰酸酯系交联剂、硅烷偶联剂的组合物。
其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层，所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
本发明的另一目的还在于提供一种基于量子效应的显示面板，包括从下至上依次设置的下偏光片、玻璃基板、彩膜基板和上述的偏光片。
本发明的又一目的还在于提供一种显示装置，包括背光单元和上述的显示面板，所述显示面板设于所述背光单元上表面。
本发明将量子效应层集成于偏光片内，使偏光片具有量子效应层的功能，将照射到其上的红绿蓝线偏光调制成频谱更窄的红绿蓝自然光，提高了显示器的彩色显示色域，同时，实现了彩色显示的高色域、低功耗和绿色健康的显示效果，显示面板和显示装置的厚度进一步减小，有利于显示面板和显示装置产品的薄型化。
附图说明
图1为本发明实施例的偏光片结构示意图。
图2为本发明实施例的显示装置结构示意图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
参阅图1，为本发明实施例的偏光片结构示意图。本发明的偏光片100包括光学延迟片层2和从下至上依次堆叠于光学延迟片层2上的第一粘合剂层3、偏光层10、第三粘合剂层7及量子效应层8。
量子效应层8主要是由红绿蓝激发量子点材料构成。红绿蓝量子点材料通过激发穿过LCD的线偏振光获得更亮和更高色纯度的自然光，因此量子点显示能够实现彩色显示的高色域、低功耗和绿色健康的显示效果。相比现有技术搭载白光LED背光单元的LCD显示装置，使用本发明实施例的偏光片可使三原色更均匀显色，更接近自然光。一般白光LED背光模块LCD显示装置的色彩重现率以NTSC(National Television Standards Committee，美国国家电视标准委员会)为基准为73％，S-RGB为基准为95％，但采用量子效应层后，色彩重现率可提升到100％以上或接近100％。
其中，本实施例的第一粘合剂层3选用聚乙烯醇水溶胶材料，光学延迟片层2为PC(聚碳酸酯)或COP(一种光学材料，一般是环烯烃共聚物)材料的四分之一光学波片。
为方便偏光片的贴装，偏光片还包括第二粘合剂层1，第二粘合剂层1具体设于光学延迟片层2下表面。这里，第二粘合剂层1选用压敏胶，第三粘合剂层7与第二粘合剂层1可为相同材料。
压敏胶选用包括丙烯酸系聚合物、异氰酸酯系交联剂、硅烷偶联剂的组合物。
具体地，偏光层10包括从下至上依次堆叠的第一聚三醋酸纤维素酯层(TAC1)4、聚乙烯醇层(PVA)5、第二聚三醋酸纤维素酯层6，第一聚三醋酸纤维素酯层4设于第一粘合剂层3上表面，第二聚三醋酸纤维素酯层6设于第三粘合剂层7下表面。
如图2所示，本发明实施例的偏光片作为上偏光片应用于显示装置中的效果图，显示装置包括背光单元500和显示面板(图未标)，显示面板设于背光单元500的上表面。该基于量子效应的显示面板包括从下至上依次设置的下偏光 片400、玻璃基板200、彩膜基板300和偏光片100，下偏光片400与背光单元500相对设置。
本发明的偏光片应用于上偏光片中，通过量子点效应层将经过下偏光片、液晶层、彩膜基板、上偏光片发出的红绿蓝线偏光调制成频谱更窄的红绿蓝自然光。通过激发穿过LCD的线偏振光获得更亮和更高色纯度的自然光，使量子点显示能够实现彩色显示的高色域、低功耗和绿色健康的显示效果；显示面板和显示装置的厚度进一步减小，有利于显示面板和显示装置产品的薄型化。
以上所述仅是本申请的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (20)

  1. 一种偏光片，其中，包括光学延迟片层和从下至上依次堆叠于所述光学延迟片层上的第一粘合剂层、偏光层、第三粘合剂层及量子效应层。
  2. 根据权利要求1所述的偏光片，其中，所述第一粘合剂层为聚乙烯醇水溶胶材料。
  3. 根据权利要求1所述的偏光片，其中，所述光学延迟片层为PC或COP材料的四分之一光学波片。
  4. 根据权利要求1所述的偏光片，其中，还包括第二粘合剂层，所述第二粘合剂层设于所述光学延迟片层下表面。
  5. 根据权利要求4所述的偏光片，其中，所述第二粘合剂层为压敏胶。
  6. 根据权利要求5所述的偏光片，其中，所述压敏胶为包括丙烯酸系聚合物、异氰酸酯系交联剂、硅烷偶联剂的组合物。
  7. 根据权利要求1所述的偏光片，其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层，所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
  8. 根据权利要求2所述的偏光片，其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层，所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
  9. 根据权利要求3所述的偏光片，其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层，所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
  10. 根据权利要求4所述的偏光片，其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层，所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
  11. 根据权利要求5所述的偏光片，其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层，所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
  12. 根据权利要求6所述的偏光片，其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层，所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
  13. 一种基于量子效应的显示面板，其中，包括从下至上依次设置的下偏光片、玻璃基板、彩膜基板和偏光片，所述偏光片包括光学延迟片层和从下至上依次堆叠于所述光学延迟片层上的第一粘合剂层、偏光层、第三粘合剂层及量子效应层。
  14. 根据权利要求13所述的显示面板，其中，所述偏光片还包括第二粘合剂层，所述第二粘合剂层设于所述光学延迟片层下表面。
  15. 根据权利要求14所述的显示面板，其中，所述第二粘合剂层为包括丙烯酸系聚合物、异氰酸酯系交联剂、硅烷偶联剂的组合物的压敏胶。
  16. 根据权利要求13所述的显示面板，其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层，所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
  17. 一种显示装置，其中，包括背光单元和显示面板，所述显示面板设于所述背光单元上表面，所述显示面板包括从下至上依次设置的下偏光片、玻璃基板、彩膜基板和偏光片，所述偏光片包括光学延迟片层和从下至上依次堆叠于所述光学延迟片层上的第一粘合剂层、偏光层、第三粘合剂层及量子效应层。
  18. 根据权利要求17所述的显示装置，其中，所述偏光片还包括第二粘合剂层，所述第二粘合剂层设于所述光学延迟片层下表面。
  19. 根据权利要求18所述的显示装置，其中，所述第二粘合剂层为包括丙烯酸系聚合物、异氰酸酯系交联剂、硅烷偶联剂的组合物的压敏胶。
  20. 根据权利要求17所述的显示装置，其中，所述偏光层包括从下至上依次堆叠的第一聚三醋酸纤维素酯层、聚乙烯醇层、第二聚三醋酸纤维素酯层， 所述第一聚三醋酸纤维素酯层设于所述第一粘合剂层上表面，所述第二聚三醋酸纤维素酯层设于所述第三粘合剂层下表面。
PCT/CN2015/078417 2015-04-23 2015-05-06 偏光片、基于量子效应的显示面板及显示装置 Ceased WO2016169069A1 (zh)

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